Copper (Cu) - 2 PPM Back Catalog number: 50591 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended M338862 Metolachlor ESA-d6 Sodium Salt, 1mg Price on request 3934.2-1ML 1,1,2-Trichloroethane, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 79-00-5 Price on request 92367 EPA Method 525.2Mix Price on request